Hi Ben & all--
This is a problem you might have to live with for now.
I (and others, including Alexey, who wrote this program) have spent
a lot of time trying to find a fix.
>From our email exchange:
It indicates a mismatch between the photon coordinates in the event
list and those calculated by pixlib routines. Certain detector
coordinates, when converted back to chip coordinates, are outside the chip
boundaries. A (rather painful) solution to this and similar problem is
described in http://asc.harvard.edu/ciao1.1/threads/pixlib.thread.html
Make sure you've done the following:
1) make sure that the coordinates in the event file are the same as in the
data from the archive. (i.e., don't run acis_process_events, or make sure it
does not change the coordinates)
2) get the *_aoff1.fits from the archive. Don't run asp_apply_sim on it.
Set aspfile=XXXX_aoff1.fits in your par.file"
If this doesn't work, try the ciao fix or to recalculate the coordinates
with acis_process_events.
If this doesn't work, the only solution is to delete the offending region.
Laura
> Hi everyone -
>
> While these tools are the hot topic, here is a problem I am having with
> both calcrmf and calcarf:
>
> -----------------------------------------------------------
> > ../calcrmf/bin.sol/calcrmf -phafile bigradioshell.pi \
> -wmap wmap.big.fits -o bigradioshell.calc.rmf @par.file
>
> LOAD FEF file:
> /nfs/ciao/CALDB/data/chandra/acis/cpf/fefs/acisD2000-01-29fef_piN0001.fits
> Initializing pixlib for aimpoint
> -7.8090834371673e-01,0.0000000000000e+00,-2.3358743446083e+02 and fpsys
> fp-1.1 ... OK
> ! could not calculate chip coordinates for detx,dety= 4100.50
> 4044.50
>
> ------------------------------------------------------------
>
> If I change the binning of the WMAP, sometimes I don't have this problem
> but that doesn't work all the time. Anyone have any ideas?
>
> Thanks,
>
> --- Ben
>
>
>
This archive was generated by hypermail 2b29 : Thu Dec 13 2012 - 01:00:05 EST